EP 0218407 B1 19920325 - DYNAMIC SIGNATURE VERIFICATION
Title (en)
DYNAMIC SIGNATURE VERIFICATION
Publication
Application
Priority
US 78418785 A 19851004
Abstract (en)
[origin: US4646351A] The subject invention relates to a new and improved method of dynamic signature verification. In accordance with the subject invention output signals, generated by a stylus, are normalized such that they are insensitive to the rotational position of the stylus with respect to the writer's grip. In operation, pressure measurements are sampled at discrete intervals and a normalization angle is calculated, representative of the average direction of the signature. Each sample is then assigned a vector length which is rotated by the normalization angle. The normalized samples are utilized to perform signature analysis.
IPC 1-7
IPC 8 full level
G06K 9/00 (2006.01); G06K 9/42 (2006.01); G06T 7/00 (2006.01); G07C 9/00 (2006.01)
CPC (source: EP US)
G06V 40/30 (2022.01 - US); G06V 40/376 (2022.01 - EP); G07C 9/35 (2020.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
US 4646351 A 19870224; AT E74220 T1 19920415; AU 580514 B2 19890112; AU 6322086 A 19870409; CA 1258918 A 19890829; DE 3684545 D1 19920430; EP 0218407 A2 19870415; EP 0218407 A3 19880113; EP 0218407 B1 19920325; JP S6368987 A 19880328
DOCDB simple family (application)
US 78418785 A 19851004; AT 86307279 T 19860922; AU 6322086 A 19860929; CA 516452 A 19860821; DE 3684545 T 19860922; EP 86307279 A 19860922; JP 20978386 A 19860908